Structures for normalizing multi-planar flow distribution within an electrochemical separation system

Patent metadata

Field	Value
Publication number	US-10814280-B2
Application number	US-201615567398-A
Country	US
Kind code	B2
Filing date	Apr 22, 2016
Priority date	Apr 24, 2015
Publication date	Oct 27, 2020
Grant date	Oct 27, 2020

Abstract

A module comprises a cell stack having a plurality of alternating ion depleting compartments and ion concentrating compartments, an inlet manifold configured to facilitate a flow of fluid into the cell stack, and a first flow distribution system, associated with the inlet manifold, including a first ramp to promote the circulation of the flow of fluid into the cell stack.

First claim

The invention claimed is:

1. A module, comprising:
a cell stack comprising a plurality of alternating ion depleting compartments and ion concentrating compartments; and
a housing enclosing the cell stack, the housing comprising:
an inlet manifold configured to facilitate a flow of fluid into the cell stack, the inlet manifold comprising a first flow distribution system integral to the inlet manifold and configured to promote uniform flow velocity across the cell stack, the first flow distribution system comprising a first ramp and a plurality of radially spaced baffles; and
an outlet manifold configured to facilitate a flow of fluid out of the cell stack, the outlet manifold comprising a second flow distribution system integral to the outlet manifold, the second flow distribution system comprising a second ramp, the first and the second ramps having different radii of curvature.

2. The module of claim 1 , wherein the plurality of radially spaced baffles comprises at least one of ribs and teeth.

3. The module of claim 1 , wherein the first ramp is positioned on at least one of a bottom and a top of the first flow distribution system.

4. The module of claim 1 , wherein the first flow distribution system is configured to promote uniform fluid distribution to the cell stack.

5. The module of claim 1 , wherein the first flow distribution system comprises a plurality of first ramps.

6. The module of claim 5 , wherein the plurality of first ramps are spaced to define a plurality of first grooves.

7. The module of claim 1 , wherein the second ramp is positioned on at least one of a bottom and a top of the second flow distribution system.

8. The module of claim 1 , wherein the second flow distribution comprises a plurality of second ramps.

9. The module of claim 8 , wherein the plurality of second ramps are spaced to define a plurality of second grooves.

10. The module of claim 1 , wherein the flow velocity of fluid in the cell stack has a variance of less than about +/−20%.

11. The module of claim 10 , wherein the flow velocity of fluid in the cell stack has a variance of less than about +/−10%.

Assignees

• Evoqua Water Tech Llc

Inventors

• Griffis Joshua
• Liang Li-Shiang

Classifications

• B01D61/44

  Ion-selective electrodialysis · CPC title

• B01D61/463

  comprising the membrane sequence AC or CA, where C is a cation exchange membrane · CPC title

• C02F1/4695

  electrodeionisation · CPC title

• C02F1/4693

  electrodialysis · CPC title

• B01D2313/125

  Discharge manifolds · CPC title